%I A064323
%S A064323 0,1,1,2,3,4,6,8,11,15,21,29,40,55,75,103,141,193,264,361,493,674,921,
%T A064323 1258,1719,2348,3208,4382,5986,8177,11170,15259,20844,28474,38896,
%U A064323 53133,72581,99148,135439,185013,252733,345240,471607,644227,880031
%N A064323 a(n)=a(n-1)+ceiling[a(n-2)/2] with a(0)=0 and a(1)=1.
%C A064323 a(5)=a(4)+ceiling[a(3)/2]=3+ceiling[2/2]=4.
%H A064323 Harry J. Smith, <a href="b064323.txt">Table of n, a(n) for n=0,...,400</
               a>
%F A064323 a(n) =A064324(n)-1. a(n)/a(n-1) approaches (1+sqrt(3))/2=1.3660254... 
               for large n.
%o A064323 (PARI) { for (n=0, 400, if (n>1, a=a1 + ceil(a2/2); a2=a1; a1=a, if (n, 
               a=a1=1, a=a2=0)); write("b064323.txt", n, " ", a) ) } [From Harry 
               J. Smith (hjsmithh(AT)sbcglobal.net), Sep 11 2009]
%Y A064323 Sequence in context: A095814 A006683 A014213 this_sequence A003411 A034081 
               A064660
%Y A064323 Adjacent sequences: A064320 A064321 A064322 this_sequence A064324 A064325 
               A064326
%K A064323 nonn
%O A064323 0,4
%A A064323 Henry Bottomley (se16(AT)btinternet.com), Sep 11 2001